Surgical suture. Surgical suture is a medical device used to hold body tissues together after an injury or surgery. Application generally involves using a needle with an attached length of thread. A number of different shapes, sizes, and thread materials have been developed over its millennia of history.
Parentheses or round brackets, denoted by '( )', is generally used to define the different precedence of numbers in a mathematical expression. Box brackets or square brackets: Apart from mathematical expression, '[ ]' square brackets are also used to represent the numbers in interval.
A bracket is a tall punctuation mark typically used in matched pairs within text, to set apart or interject other text. Used unqualified, brackets refer to different types of brackets in different parts of the world and in different contexts. Brackets include round brackets/parentheses, square brackets, curly brackets/braces, angle brackets, and various other pairs of symbols. In addition to referring to the class of all types of brackets, the unqualified word bracket is most commonly used to refer to a specific type of bracket. In modern American usage this is usually the square bracket and in modern British usage this is usually the parenthesis.